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Thu, 6 May 2021 15:47:15 +0000 Subject: Re: [PATCH] cdrom: gdrom: initialize global variable at init time To: Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, Atul Gopinathan , Jens Axboe , stable References: <20210503115736.2104747-1-gregkh@linuxfoundation.org> <20210503115736.2104747-28-gregkh@linuxfoundation.org> <223d5bda-bf02-a4a8-ab1d-de25e32b8d47@axentia.se> From: Peter Rosin Organization: Axentia Technologies AB Message-ID: <418f72b7-0161-d7b9-2747-3ee9c9372217@axentia.se> Date: Thu, 6 May 2021 17:47:12 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: sv-SE Content-Transfer-Encoding: 7bit X-Originating-IP: [85.229.94.233] X-ClientProxiedBy: HE1PR0502CA0020.eurprd05.prod.outlook.com (2603:10a6:3:e3::30) To DB8PR02MB5482.eurprd02.prod.outlook.com (2603:10a6:10:eb::29) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.13.3] (85.229.94.233) by HE1PR0502CA0020.eurprd05.prod.outlook.com (2603:10a6:3:e3::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.25 via Frontend Transport; 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On 2021-05-06 16:00, Greg Kroah-Hartman wrote: > From: Greg Kroah-Hartman > > As Peter points out, if we were to disconnect and then reconnect this > driver from a device, the "global" state of the device would contain odd > values and could cause problems. Fix this up by just initializing the > whole thing to 0 at probe() time. > > Ideally this would be a per-device variable, but given the age and the > total lack of users of it, that would require a lot of s/./->/g changes > for really no good reason. > > Reported-by: Peter Rosin > Cc: Jens Axboe > Signed-off-by: Greg Kroah-Hartman Looks good to me. Reviewed-by: Peter Rosin Thanks, Peter